Returns ordinal number of enumeration
Integer(<expression of enumeration type>)
Returns the ordinal number of the enumeration value E.enumvalue, to which the expression is evaluated, where Integer(E.e1) =1, Integer(E.en) =size(E), for an enumeration type E=enumeration(e1, ..., en).
type Size = enumeration(small, medium, large, xlarge); Size tshirt = Size.large; Integer tshirtValue = Integer(tshirt); // = 3